Industrial Power Electronic Manufacturing Built on Verification
Yueqing Keldan Technology Co., Ltd. is located in Yueqing, Wenzhou, the epicenter of China's electrical technology industry. Over the past 18 years, we have grown into an engineering-oriented manufacturer specializing in DIN Rail Power Supplies, Enclosed Switching Power Supplies, Pure & Modified Sine Wave Inverters, PWM Solar Charge Controllers, and Industrial Push Button Switches.
Our operations are structured to meet stringent international standards required by European, American, and Asian industrial buyers. As an onsite-assessed Custom Manufacturer by TÜV Rheinland, we offer integrated R&D engineering, high-speed SMT placement, precision wave and reflow soldering, automated optical inspection (AOI), 100% full-load burn-in aging testing, and customized OEM/ODM fabrication.
Whether you require customized DC voltage configurations, harsh-environment conformal coating, bespoke housing branding, or compliant CE/RoHS documentation, our 44 verified employees and 12 multilingual trade specialists deliver predictable results for mission-critical applications.
TÜV Rheinland Audited Metrics
The operational data below has been independently inspected and authenticated on-site by TÜV Rheinland:
- Facility Area:2,300 m²
- Total Verified Staff:44 Employees
- Production Line Workers:17 Skilled Technicians
- Dedicated QA/QC Inspectors:6 Quality Specialists
- R&D Senior Engineers:2 In-house (5+ yrs exp)
- Annual New Products:48 Models / Year
- On-Time Dispatch Rate:100.0% Track Record
- Trade Dispute Rate:1.5% (Industry avg 3.1%)
Verified Factory Performance vs. Industry Benchmarks
Documented transactional data audited across international trade orders over the past 12 months.
Verified Departmental & Technical Capabilities
Independent third-party verification confirms our integrated engineering, assembly, and testing lines.
Production & Scale
- Total Floor Space:2,300 m²
- Line Operators:17 Technicians
- Primary Facilities:SMT & Reflow Soldering
- Nearest Seaports:Ningbo / Shanghai
- Supply Model:OEM, ODM & Custom
R&D & Engineering
- Dedicated R&D Team:2 Senior Engineers
- New Products Launched:48 Models / Year
- Registered Trademarks:1 Owned Trademark
- Drawing-based Customization:Fully Supported
- Sample-based Customization:Rapid Prototyping
Quality Assurance
- QA/QC Inspectors:6 Dedicated Staff
- Incoming Material Check:100% Verified Records
- Optical Inspection:Automated AOI Systems
- Burn-in Reliability:Full-Load Aging Racks
- Final Pre-shipment:AQL Standards Compliant
Real Production & Quality Inspection Facilities
Explore real on-site photos of our clean assembly workshops, automated machinery, and quality control systems in Yueqing.
SMT High-Speed Mounter
High-accuracy surface mount placement
Reflow Soldering Line
Temperature-controlled solder bonding
AOI Optical Inspection
Automated defect and bridge detection
Precision Assembly Line
Manual integration and enclosure assembly
Component Welding
Robust through-hole manual soldering
Calibration & Debugging
Precision output voltage calibration
Aging Testing System
Simultaneous multi-channel burn-in testing
Full-Load Burn-in Run
Screening infant mortality failures
Lead Trimming & Cutting
Component preparation for assembly
QC Stage 1 Process
In-process electrical parameter check
QC Stage 2 Process
Post-assembly safety and hi-pot test
Workshop Overview
Organized 2,300 m² manufacturing plant
International Certifications & Conformity
Every product family manufactured by Yueqing Keldan Technology Co., Ltd. satisfies strict international directives for safety, low electromagnetic emissions, and environmental standards.
Switching Power Supplies
Certified conformity to European LVD and EMC directives. Guaranteed electrical insulation, low electromagnetic emission, and safe operation under harsh operating environments.
Power Inverters
Complies with EU low voltage standards for pure and modified sine wave off-grid power inverters. Features built-in thermal protection, overload cutoff, and surge resistance.
RoHS & EMC Compliance
Restricted hazardous substances directive compliance ensuring components are free from lead, mercury, and cadmium, certified alongside international electromagnetic compatibility.
International Export Distribution
Reliable power supplies trusted across key continents with seamless logistics execution via Ningbo and Shanghai ports.
Ready to Partner with Yueqing Keldan Technology Co., Ltd.?
Whether you require standard sample evaluation, bespoke OEM electrical specifications, or an audit of our manufacturing plant, our sales engineers are ready to assist you.
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